The marks on the rear of the chain cogs (facing drivers side) are installation marks. The timing marks on the front (passengers side, are timing marks) and need to be aligned for engine to run.
Are both heads VVTi heads?
You could try a compression test to see if the cams are timed properly, if you bring the crank to TDC #1 you should feel compression coming through the #1 spark plug hole (crankshaft timing mark aligned), if not you may have to remove the chain and re-time the camshafts.
Oct 20, 2008 at 10:36 PM